Stocks making the biggest moves after hours: Interactive Brokers, J.B. Hunt, Alcoa and more

Check out the companies making headlines in after-hours trading. Interactive Brokers – Shares of the electronic broker fell 1% after the company's third-quarter earnings missed analyst expectations. Interactive Brokers reported adjusted earnings of 67 cents per share, just below the 68 cents per share that analysts surveyed by LSEG were expecting. Revenue, however, topped expectations, coming in at $1.91 billion versus the consensus estimate of $1.87 billion. J.B. Hunt Transport Services – The stock shed more than 2% following the company's latest quarterly results. For the third quarter, J.B. Hunt earned $1.82 per share, missing the $1.89 per share that analysts were looking for. The company also posted $3.68 billion in revenue, which exceeded the $3.57 billion that was expected. Varonis Systems – The artificial intelligence security company's stock gained more than 2% after Proofpoint announced that it will be acquiring the company in an all-cash deal valued at roughly $6.3 billion. The deal is expected to close in the first half of 2027. Alcoa – Shares of the aluminum company advanced 2% after it reported better-than-expected earnings for the third quarter. Alcoa posted $1.82 in earnings per share, excluding certain items, while analysts were looking for $1.47 per share, according to LSEG. The company also posted revenue of $3.70 billion, which came up short of the $3.79 billion that was anticipated.